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hey just wondering what is the best size exhaust piping for a supercharger on a b series engine would be..just let me know if you have had one and what you thought.

 
Rep Power: 769

im running a b18b jrsc w/crv pulley right now on itr catback. i think 2.25" or 2.5" is a nice size if you plan on having 8lbs+ of boost.

 
Rep Power: 818

Usually for forced induction cars people go with 2.5" exhausts.

 
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2.5" is what you should go with

 
Rep Power: 718

I third with 2.5"
Thought my friends sc k20 runs a 3"

 
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:thumbsup: i got 3" turbocharged ...if u can 3 go for it

 
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3"

2.5 is to small.

 
Rep Power: 769

2.5" is pretty good, i think 3" is too big.
3" is nice for turbo

 
Rep Power: 765

exhaust size depends on the hp figure you run, sure you can slam a big pipe on your engine, ya it sounds good, but that doesn't mean you are getting the most from that size pipe, exhaust systems on supercharged and turbocharged engines are apples to oranges, remember superchargers do not run off the exhaust. Also, changing pipe sizes will alter the engine's tune.